From Don HO:Notepad++ is a source code editor which supports several programming languages under Windows environment. It’s also a lightweight replacement of Notepad.
The supported languages by Notepad++ are C, C++, Java, C#, XML, HTML, PHP, JavaScript, RC file, makefile, NFO, doxygen, INI file, batch file, ASP, VB/VBS, SQL, Objective-C, CSS, Pascal, Perl, Python, Lua, Unix Shell Script, Fortran, NSIS and Flash action script. Notepad++ main features are: syntax highlighting and syntax folding, regular expression search, WYSIWYG (If you have a color printer, print your source code in color), Unicode support, full drag-and-drop supported, Brace and Indent guideline highlighting, two edits and synchronized view of the same document, and user language define system.